[Seaside] Never ending poll when rendering periodical

[Ramon Leon]

> 
> Ok, I didn't understand this trick. I would rather stop the 
> polling as I showed in my previous post, that cleans up all 
> the resources and will really stop the whole thing.

So would I, but at the time, stop wasn't an available method on SUPerodical.
Seems it is now, cool, hack no longer necessary.

Ramon Leon
http://onsmalltalk.com